Regulator for fluid-compressors.



W, RAYMOND. REG ULATOB. FOR FLUID OOMPRESSORS.

APPLICATION FILED 811 130, 1909.

Patented Jul 18, 1911.

2 annnwvsmm 1.

w. RAYMOND. REGULATOR POR FLUIP COBFPRESSORS; APPLIOATIOR FILED 811M230, 1909;

Patent d Jul 13,1911- 2 SEEETSBHE I IT 2.

1 5572 evv'evhi type, in which 1 WARD RAYMOND, OE EASTON, PENNSYLVANIA, ASSIGNOR TO INGIYRSOLL-RAND 'COMPANY, OF NLEEV YORK, N. Y., A CORPORATION OF NEWJERSEY.

REGULATOR- FOR FLUID-COMPRESSORS.

To all whim it may concern: I

Be it known that I, "WARD Ra'mroxo, a citizen of the United States, and resident of liaston, in the county of-Northampton 5 and State of Pennsylvania, have invented ne and useful lmproveiiients in Regulators for Fluid-Compressors, of which the following is a specification.

The. object of this invention is to provide certain improvements in regulators for controlling the admission of fluid to a fluid compressor and it consists in a novel choking controller for the compressor intakezhaving its valve arranged to be closed by an increase of pressure upon one side thereof and acted upon by the reduction of pressure upon the other side thereof due to the closing of the valve to offset the increasing force of the valve opening means, the said valve having differential areas for securing the accomi plishment of the object above set forth.

rIn the accompanying drawings my invent'ion is represented in connection with a fluid com n'essor of the straight-line belt driven Figure 1 represents the compressor in side clevation v.'itl1 my improved'choking controller applied thereto, Fig. 2 is an enlarged viewin elevation of my improved controller,

Fig. is a section taken in theplane oi the line ;i-A of Fig. 2lookingin the direction of the arrows, Fig. i is a section taken in the plane of the line B-B of Fig. 3 looking in the.

direction of the arrows, Fig. 5 is a plan view of the valve proper, and Fig. 6 is a side view of-tlie same.

The compressor cylinder is denoted by 1 and its intake pipe by 2. The choking controller valve casing denoted by 3 and it is .20 located in the intake pipe 2. This casing is provided with an outer inlet chamber 1 and an inner outlet chamber 5, separated by a partition 6 having ports 7,8, of smaller and larger area arranged to beopened and closed by a doublevalve 9 having flanges 10, 11,

of differential areas corresponding respectively to the ports 7 and S. This double valve 9 is provided with a piston head 12 fitted to slide in a cylinder 13 secured to the casing the inncropcn end of which cylin- -i i is arranged to be engaged by the larger flange 11 of the valve for limiting the opening movement of the valve. A. coil spring 14L is utilized for normally holding the valve Specification of Letters Patent. Patented July 18, 19111.

Application filed September 30, 1909. Serial No. 520,334.

posed between the closed end of the valve and'a cap 15 located in a hollow extension 16 of the casing 3. An adjusting screw 17 is provided for regulating the tension of the valveopening spring 14:. I

The valve is closed by an increase of pressure as follows :-A,-pipe 18 leads from the discharge side of. the compressor cylinder 1- to the interior of thei cylinder 13 in front of the valve piston her; 12. When the pressure has been raised to the desired degree to overcome the opening force of the'spring 14, the valve 9 will be started on its closing movement against the tension of the said spring. As the tension of this spring 14 will increase as the valve. approaches its closed position, the reduction in pressure in the chamber 5 will act upon the other side of the valve from that exposed to the increase in pressure for overcoming the merease 0 pressure ,due

to the compression of the spring. 14:. This,

is accomplished because of the differential areas of the valve flanges 10 and 11, .as the reduction ofpressure in the intake pipe.2 between the valve and compressor will exert more influence upon the larger valve flange 11 than it does upon the smaller'valve flange 10. As soon as the pressure in the compressor is reduced below the desired amount,.it will be seen that the spring 14 will open thc'valve and. as soon as the valve is started, the effect of the reduction of pressure in the intake is withdrawn from" the valve flanges thus permitting a rapid opening of the valve.

By the arr-angemeht of the differential area of the valve flanges, it will be seen that a rapid openingand closing of the valve, is"

provided for without the use (if an auxiliary valve as has heretofore been common, for

overcoming the increased tension of the valve opening spring dtie to the closing movement of the valve.

While this regulator'has been shown in connection with a" belt driven single stage straight-line fluid compressor, it is to be understood that it may be applied to compressors of any type Where. such a regulator can be effectively used, without departing from the spirit arid scope of my invention; hence I do not wish to limit myself strictly to the structure herein set forth, but

Vhat I claim is 1, In combination, a compressing pump, a

5-5 in its openposition, whichspring is interflchoking controller valve, valve opening ing Tana 11 11.

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